Turbo-Codes will most likely be employed in future radio systems as a channel coding scheme for highrate data services. However, Turbo-Decoding is a comparatively complex task. To obtain efficient decoder implementations, the system design space has to be explored on multiple levels. In this paper, we span the system design space for Turbo-Codes and describe a method of exploration, while focus...

Channel coding is commonly incorporated to obtain sufficient reception quality in wireless mobile communications transceiver to counter channel degradation due to intersymbol interference, multipath dispersion, and thermal noise induced by electronic circuit devices. For low energy mobile wireless communications, it is highly desirable to incorporate a decoder which has a very low power consump...

In the field of mobile communication systems, the energy issue of a turbo decoder becomes an equivalent constraint as throughput and performance. This paper presents a contribution to the reduction of the power consumption in the turbo decoder. The main idea is based on re-encoding technique combined with dummy insertion during the iterative decoding process. This technique, name ”Toward Zero P...

In this paper, we consider a turbo-coded system employed on a flat-fading channel where the transmitter and receiver adapt the encoder, decoder, modulation scheme, and transmit power to the state of the channel. Assuming instantaneous and error-free channel gain and phase knowledge at the transmitter and the receiver, we determine the optimal adaptation strategy that maximizes the throughput of...

In this paper, the combination of equalization and turbo decoding is studied. In the iterative decoding of a product code in block turbo coding system, the equalization process is performed within the iteration loop. The present study aims to investigate the decision feedback equalizer (DFE) incorporated in the iterative decoding. Simulation results show that the more severe the channel interfe...

Today’s mobile information society has a steady demand for everincreasing data rates and better quality-of-service in wireless systems. To meet this demand standards organizations involved with the wireless industry are increasingly relying on modern high-performance channel codes such as low-density parity-check (LDPC) and turbo codes. These forward error-correction codes achieve near-optimal ...

We proposed a new class of asymmetric turbo encoder for 3G systems that performs well in both “water fall” and “error floor” regions in [7]. In this paper, a modified (optimal) power allocation scheme for the different bits of new class of asymmetric turbo encoder has been investigated to enhance the performance. The simulation results and performance bound for proposed asymmetric turbo code wi...